/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlinePartyInterface.h
const [FOnlineKeyValuePairs](API\Plugins\OnlineSubsystem\FOnlineKeyValuePairs)< [FString](API\Runtime\Core\Containers\FString), [FVariantData](API\Plugins\OnlineSubsystem\FVariantData) > & GetKeyValAttrs() const